Mercurial > rinkhals

annotate gamelib/engine.py @ 156:210fc1ea0516

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Stop background music whenever state changes.
author Simon Cross <hodgestar@gmail.com>
date Thu, 03 Sep 2009 21:23:34 +0000
parents 082868bea873
children fa57868123d7
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1 """Game engine and states."""
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2
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3 from pgu.engine import Game, State, Quit
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4 import pygame
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5 from pygame.locals import USEREVENT, QUIT, KEYDOWN, K_ESCAPE, K_n, K_d, K_s
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6
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7 import gameboard
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8 import gameover
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9 import sound
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10 import constants
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11 import mainmenu
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12
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13 class Engine(Game):
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14 def __init__(self, main_app):
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15 self.main_app = main_app
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16 self.clock = pygame.time.Clock()
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17 self.main_menu = mainmenu.make_main_menu()
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18 self._open_window = None
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19
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20 def tick(self):
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21 """Tic toc."""
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22 pygame.time.wait(10)
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24 def open_window(self, window):
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25 """Open a widget as the main window."""
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26 if self._open_window is not None:
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27 self.main_app.close(self._open_window)
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28 self.main_app.open(window)
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29 self._open_window = window
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31 def create_game_board(self):
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32 """Create and open a gameboard window."""
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33 self.gameboard = gameboard.GameBoard(self.main_app)
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34 self.open_window(self.gameboard.get_top_widget())
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36 def set_main_menu(self):
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37 """Open the main menu"""
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38 self.open_window(self.main_menu)
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39
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40 def create_game_over(self):
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41 """Create and open the Game Over window"""
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42 game_over = gameover.create_game_over(self.gameboard)
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43 self.open_window(game_over)
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44
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45 class MainMenuState(State):
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46 def init(self):
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47 sound.stop_background_music()
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48 self.game.set_main_menu()
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49
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50 def event(self, e):
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51 if events_equal(e, START_DAY):
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52 self.game.create_game_board()
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53 return DayState(self.game)
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54 elif e.type is KEYDOWN:
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55 if e.key == K_ESCAPE:
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56 return Quit(self.game)
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57 elif e.key == K_s:
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58 self.game.create_game_board()
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59 return DayState(self.game)
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60 elif e.type is not QUIT:
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61 self.game.main_app.event(e)
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63 def paint(self, screen):
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64 screen.fill((0,0,0))
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65 self.game.main_app.paint(screen)
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66 pygame.display.flip()
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67
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68 def update(self, screen):
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69 update = self.game.main_app.update(screen)
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70 pygame.display.update(update)
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71
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72 class DayState(State):
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73 def init(self):
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74 """Add some chickens to the farm"""
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75 sound.stop_background_music()
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76 self.game.gameboard.tv.sun(True)
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78 sound.play_sound("daybreak.ogg")
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79 # disable timer
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80 pygame.time.set_timer(MOVE_FOX_ID, 0)
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81 self.game.gameboard.advance_day()
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82 self.game.gameboard.clear_foxes()
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83 sound.background_music("daytime.ogg")
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84 self.game.gameboard.hatch_eggs()
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85
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86 def event(self, e):
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87 if events_equal(e, START_NIGHT):
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88 return NightState(self.game)
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89 elif e.type is KEYDOWN and e.key == K_ESCAPE:
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90 return GameOver(self.game)
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91 elif e.type is KEYDOWN and e.key == K_n:
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92 return pygame.event.post(START_NIGHT)
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93 elif events_equal(e, GO_MAIN_MENU):
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94 return MainMenuState(self.game)
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95 elif e.type is not QUIT:
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96 self.game.main_app.event(e)
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97
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98 def paint(self, screen):
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99 self.game.main_app.paint(screen)
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100 pygame.display.flip()
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101
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102 def update(self, screen):
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103 self.game.gameboard.update()
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104 update = self.game.main_app.update(screen)
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105 pygame.display.update(update)
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106
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107 def loop(self):
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108 self.game.gameboard.loop()
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109
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110 class NightState(State):
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111 def init(self):
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112 """Add some foxes to the farm"""
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113 sound.stop_background_music()
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114 self.game.gameboard.tv.sun(False)
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115
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116 sound.play_sound("nightfall.ogg")
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117 # Add a timer to the event queue
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118 self.cycle_count = 0
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119 pygame.time.set_timer(MOVE_FOX_ID, 200)
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120 self.game.gameboard.spawn_foxes()
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121 sound.background_music("nighttime.ogg")
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122
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123 self.game.gameboard.lay_eggs()
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124
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125 def event(self, e):
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126 if events_equal(e, START_DAY):
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127 if self.game.gameboard.is_game_over():
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128 return GameOver(self.game)
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129 return DayState(self.game)
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130 elif e.type is KEYDOWN and e.key == K_d:
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131 return pygame.event.post(START_DAY)
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132 elif e.type is KEYDOWN and e.key == K_ESCAPE:
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133 return GameOver(self.game)
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134 elif e.type is MOVE_FOX_ID:
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135 self.cycle_count += 1
139
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136 if self.cycle_count > constants.NIGHT_LENGTH:
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137 return pygame.event.post(START_DAY)
122
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138 if self.game.gameboard.move_foxes():
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139 # All foxes are gone/safe, so dawn happens
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140 return pygame.event.post(START_DAY)
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141 elif e.type is not QUIT:
151
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142 self.game.main_app.event(e)
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143
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144 def loop(self):
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145 self.game.gameboard.loop()
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146
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147 def paint(self, screen):
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148 self.game.main_app.paint(screen)
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149 pygame.display.flip()
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150
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151 def update(self, screen):
151
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152 self.game.gameboard.update()
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153 update = self.game.main_app.update(screen)
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154 pygame.display.update(update)
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155
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156 class GameOver(State):
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157 def init(self):
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158 """Setup everything"""
156
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159 sound.stop_background_music()
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160 self.game.create_game_over()
142
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161 pygame.time.set_timer(MOVE_FOX_ID, 0)
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162
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163 def event(self, e):
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164 if e.type is KEYDOWN:
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165 if e.key == K_ESCAPE:
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166 return MainMenuState(self.game)
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167 elif events_equal(e, GO_MAIN_MENU):
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168 return MainMenuState(self.game)
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169 elif e.type is not QUIT:
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170 self.game.main_app.event(e)
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171
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172 def paint(self, screen):
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173 screen.fill((0,0,0))
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174 self.game.main_app.paint(screen)
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175 pygame.display.flip()
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176
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177 def update(self, screen):
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178 update = self.game.main_app.update(screen)
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179 pygame.display.update(update)
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180
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181 # pygame events
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182
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183 def events_equal(e1, e2):
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184 """Compare two user events."""
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185 return (e1.type is e2.type and e1.name == e2.name)
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186
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187 START_DAY = pygame.event.Event(USEREVENT, name="START_DAY")
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188 START_NIGHT = pygame.event.Event(USEREVENT, name="START_NIGHT")
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189 GO_MAIN_MENU = pygame.event.Event(USEREVENT, name="GO_MAIN_MENU")
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190 MOVE_FOX_ID = USEREVENT + 1
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191 MOVE_FOXES = pygame.event.Event(MOVE_FOX_ID, name="MOVE_FOXES")
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192 QUIT = pygame.event.Event(QUIT)